/*
 *  Copyright (c) xlightweb.org, 2008 - 2010. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Please refer to the LGPL license at: http://www.gnu.org/copyleft/lesser.txt
 * The latest copy of this software may be found on http://www.xlightweb.org/
 */
package org.xlightweb;


import java.io.IOException;


/**
 * Part defintion  
 *  
 * @author grro@xlightweb.org
 */
public interface IPart extends IHeader {
	
	
	/**
	 * returns the part header 
	 * 
	 * @return the part header
	 */
	IHeader getPartHeader(); 
	
    
    /**
     * returns the non-blocking body 
     * 
     * @return the body or <code>null</code> if parte is bodyless
     */
    NonBlockingBodyDataSource getNonBlockingBody() throws IOException;
    
    
    /**
     * @deprecated use {@link IPart#getBody()} instead
     */
    BlockingBodyDataSource getBlockingBody() throws IOException;

    
    /**
     * returns the blocking body 
     * 
     * @return the body or <code>null</code> if part is bodyless
     */
    BodyDataSource getBody() throws IOException;
    
    /**
     * returns true if the part has a body
     * 
     * @return  true, if the part has a body
     */
    boolean hasBody();
}
